United States v. Santiago Santiago

156 F. Supp. 2d 145, 2001 U.S. Dist. LEXIS 11539, 2001 WL 881253
CourtDistrict Court, D. Puerto Rico
DecidedAugust 1, 2001
DocketCIV. 00-152(PG)
StatusPublished
Cited by1 cases

This text of 156 F. Supp. 2d 145 (United States v. Santiago Santiago) is published on Counsel Stack Legal Research, covering District Court, D. Puerto Rico primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
United States v. Santiago Santiago, 156 F. Supp. 2d 145, 2001 U.S. Dist. LEXIS 11539, 2001 WL 881253 (prd 2001).

Opinion

OPINION & ORDER

PEREZ-GIMENEZ, District Judge.

On June 8, 2000 a criminal complaint was filed against defendant charging him of taking with intent to cause death or serious bodily injury a 1992 Toyota Paseo from the person of Neisha de Jesus Colon in violation of 18 U.S.C. 2119(2). During the course of the investigation, the FBI collected various hair, semen and blood samples from the vehicle. The DNA and hair samples extracted from the scene of the crime was then compared to the DNA and hair samples obtained from Defendant. The United States seeks to introduce this evidence at trial.

Now before the Court is Defendant’s motion to suppress evidence. In said motion Defendant asks the Court to issue an order “preventing the government from stating, during the trial of this case, the probabilities that DNA material allegedly found at the scene of the crime belong to him [defendant]” and “preventing the Gov- *147 eminent from stating, during the trial of this case, that hair samples allegedly found at the scene of the crime belong to the defendant or are microscopically consistent with the defendant’s hair.” According to Defendant the DNA evidence should be excluded because it fails to meet the standard for admissibility enunciated in Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993). Specifically, Defendant argues that the DNA evidence is not scientifically sound because the database to determine the probability that a person chosen at random from a given population would have a DNA profile identical to that one found at the scene of the crime; is that of Hispanics in the United States and not Puerto Ricans from Puerto Rico. After reviewing the case file and pertinent case law, the Court is ready to rule.

STANDARD OF ADMISSIBILITY

A court assessing whether a witness can testify as an expert must ascertain that the witness’ opinions are-reliable under the Supreme Court’s opinion in Daubert and Kumho Tire. Bogosian v. Mercedes-Benz, 104 F.3d 472, 476, (1st Cir.1997) Daubert v. Merrell Dow Pharmaceuticals, 509 U.S. 579, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993); Kumho Tire Co. v. Carmichael, 526 U.S. 137, 119 S.Ct. 1167, 143 L.Ed.2d 238 (1999); See also Bogosian, 104 F.3d at 476 (where the First Circuit endorsed a three step analysis when courts evaluate expert testimony under Rule 702 1 ). Daubert requires the court to exercise a “gatekeeping” function “to make certain that an expert, whether basing testimony on professional studies or personal experience, employs in the courtroom the same level of intellectual rigor that characterizes the practice of an expert in the relevant field”. Kumho Tire, 526 U.S. at 156, 119 S.Ct. 1167. The purpose of the inquiry is to “rule out subjective belief or speculation”. Porter v. Whitehall Labs., Inc., 9 F.3d 607, 614 (7th Cir.1993) (quoting Daubert, 509 U.S. at 590, 113 S.Ct. 2786).

Daubert’s reliability requirement calls on the district court to evaluate whether the methodology used by the witness is based on the scientific method. See e g., Daubert II, 43 F.3d at 1316 (stating that “the party presenting the expert must show that the expert’s findings are based on sound science, and this will require some objective, independent validation of the experts methodology”). The Daubert court identified four factors by which reliability of a witness’ method may be measured. These are: (1) The extent by which the theory has been or can be tested (2) whether the theory has been subjected to peer review and/or publication (3) the theory or techniques potential rate of error (4) whether the underlying theory or technique has been generally accepted as valid by the relevant scientific community. These four factors are not exclusive. Lower courts have expanded Daubert to encompass other factors. See e g., Joiner v. General Electric Co., 78 F.3d 524, 532 (11th Cir.1996) (Holding that the extensive expertise of the expert augments the reliability of their reasoning and methodology); *148 Daubert II, 43 F.3d at 1317 (Stating that courts should consider the fact that an expert developed his opinion expressly for litigation purposes).

A district court has discretion to decide what kind of verification is appropriate in a particular case. Kumho Tire, 526 U.S. at 150, 119 S.Ct. 1167 (holding that “we neither rule out or rale in the applicability of the factors mentioned in Daubert,.... Too much depends on the facts of a particular case at issue.”). Gauging an expert’s usefulness is almost always a case specific inquiry. U.S. v. Sepulveda, 15 F.3d 1161, 1183 (1st Cir.1993).

DNA EVIDENCE

The DNA profiling process can be divided in three: laboratory procedures, matching and applying principles of population genetics and statistics. Government of Virgin Islands v. Penn, 838 F.Supp. 1054, 1059 (D.Virgin Islands 1993). A positive DNA match can only mean two things: either the VNTRs 2 come from the same person (the suspect and the assailant are the same person) or the suspect and the assailant are different persons but by coincidence, the suspect’s VNTRs fragment lengths are identical to those of the assailant. Penn, 838 at 1063. As part of the DNA profiling process, the testing facility determines the possibility that such coincidence has occurred. The facility utilizes genetic databases compiled for certain ethnic and racial populations in order to assess the probability that a person chosen at random from a given population would have a DNA profile identical to that of the suspects’s. Id.

The core of Defendant’s argument is that the DNA evidence is not scientifically trustworthy because the database that was used for calculating the probability that the sample obtained in the scene came from another individual is that of Hispanics in general and not that of Puerto Ricans specifically. According to Defendant “a comparison made of the defendant’s DNA and DNA found at the scene of the alleged crime, which is based on a comparison of genetic factors which assume that ‘Hispanic DNA’ is identical to ‘Puertorican (sic) DNA’, is statistically invalid.” See Defendant’s Memorandum of Law in Support of Defendant’ s Motion to Exclude (Dkt.46) at p. 3.

Defendant’s argument is flawed.

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Bluebook (online)
156 F. Supp. 2d 145, 2001 U.S. Dist. LEXIS 11539, 2001 WL 881253, Counsel Stack Legal Research, https://law.counselstack.com/opinion/united-states-v-santiago-santiago-prd-2001.